Exhibit 10.15


                              PROMISSORY NOTE

Up to $350,000                 Conyers, Georgia                19 November, 2001


         FOR VALUE RECEIVED, the undersigned, CYNTECH TECHNOLOGIES, INC.
("Maker"), a Utah corporation whose mailing address and principal office is 4305
Derbyshire Trace, SE, Conyers, Georgia 30094, hereby promises to pay to WINDSTAR
RESEARCH AND ENGINEERING, LTD. ("Payee"), a Cayman Islands corporation whose
mailing address is P.O. Box 7275, Columbus, GA 31908, the principal sum of up to
Three Hundred and Fifty Thousand and No/100 Dollars ($350,000), in lawful money
of the United States of America for payment of private debts, together with
interest (calculated on the basis of the actual number of days elapsed but
computed as if each year consisted of 360 days) on the unpaid principal balance
from time to time outstanding at a rate, except as otherwise provided in this
Note, of twelve percent (12%) per annum. All past due amounts and accrued
interest thereon shall bear interest at the maximum rate permitted under Georgia
law, compounded quarterly, until paid.

         1. Current Amount Advanced; Additional Advances. Payee has agreed to
pay, on behalf of and at the request of Maker, up to $350,000 of certain
third-party costs associated with implementing Maker's business plan. As of the
year and date first above written, Payee has advanced $180,000 of such
third-party costs. Additional advances shall be made at the request of Maker so
long as those costs are directly associated with the design, engineering,
approval or construction of Maker's proposed facility in Chambers County, Texas,
and so long as the total advanced under this Note does not exceed $350,000.

         2. Payment. This Note shall be due and payable thirty (30) days after
demand, so long as demand is made after August 1, 2003.

         3. Time and Place of Payment. If any payment falls due on a day which
is considered a legal holiday in the state of Georgia, Maker shall be entitled
to delay such payment until the next succeeding regular business day, but
interest shall continue to accrue until the payment is in fact made. Each
payment or prepayment hereon must be paid at the office of Payee set forth
above, or at such other place as the Payee or other Payee may from time to time
designate in writing.

         4. Prepayment. Maker reserves the right and privilege of prepaying this
Note in whole or in part at any time, or from time to time, without notice,
premium, charge, or penalty. Prepayments on this Note shall be applied first to
accrued and unpaid interest to the date of such prepayment, next to expenses for
which Payee is due to be reimbursed under the terms of this Note, and then to
the unpaid principal balance hereof.

         5. Default. Without notice or demand (which are hereby waived), the
entire unpaid principal balance of, and all accrued interest on, this Note shall
immediately become due and payable at the option of the Payee upon the
occurrence of one or more of the following events of default ("Events of
Default"):

                  (a) The failure or refusal of Maker to pay principal of or
         accrued interest on this Note within ten (10) days of when the same
         becomes due in accordance with the terms hereof.

                  (b) The failure or refusal of Maker punctually and properly to
         perform, observe, and comply with any covenant or agreement contained
         herein, and such failure or refusal continues for a period of thirty
         (30) days after Maker has (or, with the exercise of reasonable
         investigation, should have) notice hereof.

                  (c) Maker shall (i) voluntarily seek, consent to or acquiesce
         in the benefit or benefits of any Debtor Relief Law (defined
         hereinafter), or (ii) become a party to (or be made the subject of) any
         proceeding provided for by any Debtor Relief Law, other than as a
         creditor or claimant, that could suspend or otherwise adversely affect
         the Rights (defined hereinafter) of Payee granted herein (unless, in
         the event such proceeding is involuntary, the petition instituting same
         is dismissed within 60 days of the filing of same). "Debtor Relief Law"
         means the Bankruptcy Code of the United States of America and all other
         applicable liquidation, conservatorship, bankruptcy, moratorium,
         rearrangement, receivership, insolvency, reorganization, suspension of
         payments, or similar Laws from time to time in effect affecting the
         Rights of creditors generally. "Rights" means rights, remedies, powers,
         and privileges. "Laws" means all applicable statutes, laws, ordinances,
         regulations, orders, writs, injunctions, or decrees of any state,
         commonwealth, nation, territory, possession, county, parish,
         municipality, or Tribunal. "Tribunal" means any court or governmental
         department, commission, board, bureau, agency or instrumentality of the
         United States or of any state, commonwealth, nation, territory,
         possession, county, parish, or municipality, whether now or hereafter
         constituted and/or existing.

                  (d) The failure to have discharged within a period of thirty
         (30) days after the commencement thereof any attachment, sequestration
         or similar proceeding against any of the assets of Maker, or the loss,
         theft or destruction of, or occurrence of substantial damage to a
         material part of the assets of Maker, except to the extent adequately
         covered by insurance.

                  (e) Maker fails to pay any money judgment against it at least
         ten (10) days prior to the date on which any of Maker's assets may be
         lawfully sold to satisfy such judgment.

If any one or more of the Events of Default specified above shall have happened,
the Payee may, at Payee's option, (i) declare the entire unpaid balance of
principal of and accrued interest on this Note to be immediately due and payable
without notice or demand, (ii) offset against this Note any sum or sums owed by
the Payee to Maker, (iii) reduce any claim to judgment, (iv) foreclose all liens
and security interests securing payment thereof or any part thereof and/or (v)
proceed to protect and enforce its rights either by suit in equity and/or by
action of law, or by other appropriate proceedings, whether for the specific
performance of any covenant or agreement contained in this Note, or in aid of
the exercise granted by this Note, of any right, or to enforce any other legal
or equitable right or remedy of the Payee.

         6. Cumulative Rights. No delay on the part of the Payee in the exercise
of any power or right or single partial exercise of any such power or right
under this Note, or under any other instrument executed pursuant hereto shall
operate as a waiver thereof.

         7. Collection Costs. If this Note is placed in the hands of an attorney
for collection, or if it is collected through any legal proceeding at law or in
equity or in bankruptcy, receivership or other court proceedings, Maker agrees
to pay all costs of collection, including but not limited to court costs and
reasonable attorney's fees of the Payee.

         8. Waiver. Maker, and each surety, endorser, guarantor, and other party
liable for the payment of any sums of money payable on this Note, jointly and
severally waive presentment and demand for payment, protest, and notice of
protest and nonpayment, or other notice of default except as specified herein
and agree that their liability on this Note shall not be affected by any renewal
or extension in the time of payment hereof, or in any indulgences, or by any
partial payment, any release or change in any security for the payment of this
Note, before or after maturity, regardless of the number of such renewals,
extensions, indulgences, releases, or changes.

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         9. Notices. Any notice or demand given hereunder by the Payee shall be
deemed to have been given and received (a) when actually received by Maker, if
delivered in person, or (b) if mailed, on the earlier of the date actually
received or (whether ever received or not) two business days after deposit in
the U. S. Mail, postage prepaid, addressed to Maker at its address on the first
page.

         10. Successor and Assigns. All of the covenants, stipulations, promises
and agreements in this Note contained by or on behalf of Maker shall bind its
successors and assigns, whether so expressed or not; provided, however, that
neither Maker nor Payee may, without the prior written consent of the other,
assign any rights, powers, duties, or obligations under this Note.

         11. Headings. The headings of the paragraphs of this Note are inserted
for convenience only and shall not be deemed to constitute a part hereof.

         12. Applicable Law. This Note is being executed and delivered, and is
intended to be performed, in the state of Georgia, and the substantive laws of
such state shall govern the validity, construction, enforcement and
interpretation of this Note.


         EXECUTED effective the year and date first above written.

                                                  CYNTECH TECHNOLOGIES, INC.


                                                  By /s/ R. Frank Meyer
                                                  ---------------------------
                                                  R. Frank Meyer, President


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